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Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.

Tuesday, November 9, 2021

SPC Nov 9, 2021 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0633 AM CST Tue Nov 09 2021 Valid 091300Z - 101200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS WESTERN WA... ...SUMMARY... A brief tornado or locally damaging wind event is possible this afternoon, mainly across a portion of western Washington. ...Western WA/northwest OR... A strong shortwave trough will spread inland later this morning with a pocket of -30 C 500-mb temperatures centered on western WA this afternoon. As the Pacific surface front advances farther inland, westerly onshore flow in conjunction with the cooling mid-levels will result in a destabilizing air mass. Scattered low-topped convection is expected this afternoon with sporadic lightning flashes in the more intense cells. Favorable low-level speed shear should yield adequate hodograph curvature to foster a conditional threat for a transient supercell. But scant buoyancy will most likely preclude a more substantial severe threat beyond a low-probability tornado and/or damaging wind event. ..Grams.. 11/09/2021 Read more LIVE: spc.noaa.gov
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